Thread partitioning in a multi-core environment
    4.
    发明授权
    Thread partitioning in a multi-core environment 有权
    多核环境中的线程分区

    公开(公告)号:US08707016B2

    公开(公告)日:2014-04-22

    申请号:US12024211

    申请日:2008-02-01

    IPC分类号: G06F9/30

    CPC分类号: G06F9/4843 G06F9/3851

    摘要: A set of helper thread binaries is created to retrieve data used by a set of main thread binaries. The set of helper thread binaries and the set of main thread binaries are partitioned according to common instruction boundaries. As a first partition in the set of main thread binaries executes within a first core, a second partition in the set of helper thread binaries executes within a second core, thus “warming up” the cache in the second core. When the first partition of the main completes execution, a second partition of the main core moves to the second core, and executes using the warmed up cache in the second core.

    摘要翻译: 创建一组辅助线程二进制文件来检索一组主线程二进制文件使用的数据。 辅助线程二进制文件集和主线程二进制文件集合根据公共指令边界进行分区。 作为主线程二进制文件集合中的第一分区在第一核心内执行,该辅助线程二进制文件集中的第二分区在第二核心内执行,从而“预热”第二核心中的高速缓存。 当主要的第一分区完成执行时,主核心的第二分区移动到第二核心,并使用第二核心中的预热高速缓存执行。

    Speculative popcount data creation
    5.
    发明授权
    Speculative popcount data creation 有权
    投机性的popcount数据创建

    公开(公告)号:US08387065B2

    公开(公告)日:2013-02-26

    申请号:US12425343

    申请日:2009-04-16

    摘要: A method and a data processing system by which population count (popcount) operations are efficiently performed without incurring the latency and loss of critical processing cycles and bandwidth of real time processing. The method comprises: identifying data to be stored to memory for which a popcount may need to be determined; speculatively performing a popcount operation on the data as a background process of the processor while the data is being stored to memory; storing the data to a first memory location; and storing a value of the popcount generated by the popcount operation within a second memory location. The method further comprises: determining a size of data; determining a granular level at which the popcount operation on the data will be performed; and reserving a size of said second memory location that is sufficiently large to hold the value of the popcount.

    摘要翻译: 一种方法和数据处理系统,通过该方法和数据处理系统有效地执行人口计数(popcount)操作,而不会导致关键处理周期的延迟和丢失以及实时处理的带宽。 该方法包括:识别要存储到可能需要确定一个弹出窗口的存储器的数据; 在将数据存储到存储器中的情况下,作为处理器的后台处理推测性地对数据进行弹出数据操作; 将数据存储到第一存储器位置; 以及将由所述popcount操作生成的所述popcount的值存储在第二存储器位置内。 该方法还包括:确定数据的大小; 确定将执行对数据的弹出数据操作的粒度级别; 以及保留所述第二存储器位置的大小足够大以保持所述用户名的值。

    Block driven computation with an address generation accelerator
    7.
    发明授权
    Block driven computation with an address generation accelerator 失效
    使用地址生成加速器进行块驱动计算

    公开(公告)号:US08285971B2

    公开(公告)日:2012-10-09

    申请号:US12336315

    申请日:2008-12-16

    IPC分类号: G06F12/00

    摘要: A processor includes at least one execution unit that executes instructions, at least one register file, coupled to the at least one execution unit, that buffers operands for access by the at least one execution unit, an instruction sequencing unit that fetches instructions for execution by the at least one execution unit, and an address generation accelerator. The address generation accelerator, responsive to an initiation signal received from the instruction sequencing unit, computes and outputs first and second effective addresses of operands of an operation.

    摘要翻译: 处理器包括执行指令的至少一个执行单元,耦合到所述至少一个执行单元的至少一个寄存器文件,其缓冲由所述至少一个执行单元访问的操作数,指令排序单元,其通过 所述至少一个执行单元和地址生成加速器。 地址产生加速器响应于从指令排序单元接收的发起信号,计算并输出操作的操作数的第一和第二有效地址。

    Varying an amount of data retrieved from memory based upon an instruction hint
    8.
    发明授权
    Varying an amount of data retrieved from memory based upon an instruction hint 失效
    根据指令提示改变从存储器检索的数据量

    公开(公告)号:US08266381B2

    公开(公告)日:2012-09-11

    申请号:US12024170

    申请日:2008-02-01

    IPC分类号: G06F12/08

    摘要: In at least one embodiment, a processor detects during execution of program code whether a load instruction within the program code is associated with a hint. In response to detecting that the load instruction is not associated with a hint, the processor retrieves a full cache line of data from the memory hierarchy into the processor in response to the load instruction. In response to detecting that the load instruction is associated with a hint, a processor retrieves a partial cache line of data into the processor from the memory hierarchy in response to the load instruction.

    摘要翻译: 在至少一个实施例中,处理器在执行程序代码期间检测程序代码内的加载指令是否与提示相关联。 响应于检测到加载指令不与提示相关联,处理器响应于加载指令从存储器层次结构检索完整的高速缓存行数据到处理器。 响应于检测到加载指令与提示相关联,处理器响应于加载指令从存储器层次结构检索数据的部分高速缓存行到处理器中。

    Remote asynchronous data mover
    9.
    发明授权
    Remote asynchronous data mover 失效
    远程异步数据移动器

    公开(公告)号:US07996564B2

    公开(公告)日:2011-08-09

    申请号:US12425093

    申请日:2009-04-16

    IPC分类号: G06F12/00

    摘要: A distributed data processing system executes multiple tasks within a parallel job, including a first local task on a local node and at least one task executing on a remote node, with a remote memory having real address (RA) locations mapped to one or more of the source effective addresses (EA) and destination EA of a data move operation initiated by a task executing on the local node. On initiation of the data move operation, remote asynchronous data move (RADM) logic identifies that the operation moves data to/from a first EA that is memory mapped to an RA of the remote memory. The local processor/RADM logic initiates a RADM operation that moves a copy of the data directly from/to the first remote memory by completing the RADM operation using the network interface cards (NICs) of the source and destination processing nodes, determined by accessing a data center for the node IDs of remote memory.

    摘要翻译: 分布式数据处理系统在并行作业中执行多个任务,包括本地节点上的第一本地任务和在远程节点上执行的至少一个任务,具有映射到以下的一个或多个的实地址(RA)位置的远程存储器 由本地节点上执行的任务启动的数据移动操作的源有效地址(EA)和目标EA。 在启动数据移动操作时,远程异步数据移动(RADM)逻辑识别该操作将数据移动到/从第一个EA,该第一个EA是映射到远程存储器的RA的存储器。 本地处理器/ RADM逻辑启动RADM操作,其通过使用源和目的地处理节点的网络接口卡(NIC)完成RADM操作,直接从/向第一远程存储器移动数据的副本,其通过访问 数据中心为远程存储器的节点ID。

    Method for enabling direct prefetching of data during asychronous memory move operation
    10.
    发明授权
    Method for enabling direct prefetching of data during asychronous memory move operation 失效
    用于在异步存储器移动操作期间直接预取数据的方法

    公开(公告)号:US07921275B2

    公开(公告)日:2011-04-05

    申请号:US12024598

    申请日:2008-02-01

    IPC分类号: G06F12/00

    摘要: While an asynchronous memory move (AMM) operation is ongoing, a prefetch request for data from the source effective address or the destination effective address triggers cache injection by the AMM mover of relevant data from the stream of data being moved in the physical memory. The memory controller forwards the first prefetched line to the prefetch engine and L1 cache, the next cache lines in the sequence of data to the L2 cache, and a subsequent set of cache lines to the L3 cache. The memory controller then forwards the remaining data to the destination memory location. Quick access to prefetch data is enabled by buffering the stream of data in the upper caches rather than placing all the moved data within the memory. Also, the memory controller places moved data into only a subset of the available cache lines of the upper level cache.

    摘要翻译: 当异步存储器移动(AMM)操作正在进行时,来自源有效地址或目的地有效地址的数据的预取请求触发AMM移动器对来自物理存储器中移动的数据流的相关数据的高速缓存注入。 存储器控制器将第一预取行转发到预取引擎和L1高速缓存,将数据序列中的下一个高速缓存行转发到L2高速缓存,以及将后续的一组高速缓存行转发到L3高速缓存。 存储器控制器然后将剩余的数据转发到目的地存储器位置。 通过缓存高速缓存中的数据流,而不是将所有移动的数据放在内存中,可以快速访问预取数据。 此外,存储器控制器将移动的数据仅放置在高级缓存的可用高速缓存行的子集中。